Update Readme: Dependencies and Troubleshooting
Update Readme: Dependencies and Troubleshooting

Fresh Arch install took a couple attempts - I first had to install Ruby and CMake. Once I'd done that, the `install` script executed seamlessly. Everything behaves as it should (none of the erratic behavior I mentioned in issue #35).

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent